Tunai Double Side Scrubber For Cleaning Aquarium Tank is made of high-quality sponge, which remove sthe algae quickly and effectively. It is fitted with double brush sponge or scrubber which allows you to clean with both sides. It is lightweight & durable and can allow you to clean and maintain a clean environment. This algae scraper brush suitable for glass fish tank, a great assistant tool for your aquariums, BUT NOT SUITABLE FOR ACRYLIC FISH TANK and PLASTIC FISH TANK. efficiently cleans your fish tank without scratching the walls. With a hole on the end of the handle, enables you to hang it on the wall after using, keep the brush head dry and use for long time.